Porsche 928 - WORKSHOP MANUAL 1977 Workshop Manual page 130

929 Wheels. Tires. Alianment
44
Tire pressure warning system - General
General
A tire pressure warning system is fitted to 928 S 4 vehicles as standard, from Mod. 1989
onwards, initially excluding USA and Canada, however. The tire pressure warning system is another
development which constitutes a significant contribution towards road safety. The tire inflation pressu-
re is monitored by the control system, which
- monitors the correct inflation pressure with a greater degree of accuracy and reliability than any
pressure tester in the on-board tool set, at the garage or in the workshop
- automatically allows for temperature's influence on the air pressure (temperature-compensated
threshold value system)
- Ensures perfect and low fuel consumption as a result of correct inflation pressure
HelDs and increased tread wear p
The tire pressure warning system detects Wleauate inflation oressure in one or several wheels, and
displays this on the instrument cluster after at least 20 m distance at a speed of more than 5 km/h.
Tire pressure warning system - General
Printed in Germany - X41,19ES
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